Tooth bleaching compositions and methods of bleaching discolored tooth

Inactive Publication Date: 2005-01-18
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

It is the objectives of the present invention to provide the bleaching compositions and also the bleaching methods. The compositions and methods overcome the problems mentioned abov

Problems solved by technology

However, the aforementioned methods have the following disadvantages: it is very difficult to apply the surfaces of teeth with enough amounts of bleaching agent, that caus

Method used

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Examples

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Comparison scheme
Effect test

examples 1 to 14 and comparable example

(1) Preparation of the Bleaching Compositions

Titanium dioxide, a thickening agent, a chemical compound generating hydrogen peroxide in an aqueous solution and distilled water are mixed so as to obtain the bleaching compositions, which are composed of the constituents shown in Table 1, wherein the concentration of the hydrogen peroxide in the bleaching compositions measured by the permanganate titration.

(2) Bleaching the Discolored Tooth By using the bleaching compositions obtained above (1), bleaching treatments have done followed the process below:

1) As preliminary arrangements, the plaque, the tartar, the tar and the like are removed from the discolored tooth surface by a using ultrasonic waves scaler.2) The tooth surface was cleaned-by using rubber-cup and etc., and a conventional method and dried.3) A plain moisture-proofing method is carried out.4) A bleaching composition prepared above (1) was applied on the tooth surface and followed by irradiation of ultraviolet rays having ...

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Abstract

The bleaching compositions of discolored teeth comprise titanium dioxide initiating photocatalyst action with light irradiation, chemical compounds generating hydrogen peroxide in an aqueous solution and thickening agents. Further the bleaching methods of discolored teeth comprising applying the bleaching composition onto the surface area of the teeth and then initiating photocatalyst action by irradiating the applied surfaces area with light. Therefore, the present invention shows remarkable bleaching results due to easy application of the compositions onto discolored teeth and keeping the original activity of the photocatalyst without its deterioration.

Description

TECHNICAL FIELDThe present invention relates to methods for bleaching and removing colored sediment on teeth by photocatalytic action, and tooth bleaching compositions for the methods. More particularly, the present invention relates to methods for bleaching the discolored teeth by applying the bleaching composition, comprising certain compounds having photocatalytic activity, onto the discolored teeth and then irradiating the applied area with light, and also the present invention relates to the bleaching compositions for the bleaching methods.BACKGROUND ARTRecent year, there have been increasing demand for esthetic improvements of teeth such as improvements of contours, alignment and integrity of teeth in dental therapy. In particular, there have been more cases of young women desiring such dental therapy so as to whitening teeth as an important element of beauty. Generally, the cause of dental discoloration and pigmentation or stain falls into the two categories: (1) extrinsic ca...

Claims

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Application Information

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IPC IPC(8): A61K8/22A61K8/19A61Q11/00A61C17/00A61K8/29
CPCA61K8/22A61Q11/00A61K8/29A61K8/24
Inventor ISHIBASHI, TAKUROHIGASHIIZUMI, EMISOTOAKA, RYUJIISHIHARA, FUKUSABUROKAKUDA, MINORUOGASAWARA, MASUMIISHIBASHI, KOUZO
Owner MITSUBISHI GAS CHEM CO INC
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